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Average expansion ratios according to OFAT parameter settings.
| Average expansion ratio of polypropylene | ||||
| Levels | Low | Medium | High | |
| Parameters | ||||
| Injection speed (cm3/s) | 1.126 | 1.123 | 1.119 | |
| Melt temperature (°C) | 1.000 | 1.134 | 1.232 | |
| Mold temperature (°C) | 1.150 | 1.146 | 1.143 | |
| Average expansion ratio of polystyrene | ||||
| Levels | Low | Medium | High | |
| Parameters | ||||
| Injection speed (cm3/s) | 1.133 | 1.127 | 1.169 | |
| Melt temperature (°C) | 1.123 | 1.202 | 1.145 | |
| Mold temperature (°C) | 1.165 | 1.145 | 1.128 | |
